Canada

Yeah, could is doing a fair bit of lifting. What, does he have to decide to stay here full-time? Well, sure, if he did that, I'm sure security, dignitary visits, etc. could ramp us up to those numbers, but the entire royal family usually only costs us a few million a year for their visits. Increasing that by a factor of 20 for just one individual seems a bit alarmist.

Now, I can accept there are perfectly legitimate reasons to want to get rid of the monarchy, I just don't see it as worth it from a pragmatic or financial standpoint. If they decide to have more impact than their quaint celebrity status and their names on a few rubber stamps, I imagine a lot of people like me would shrug and say, "Welp, end of a era, looks like we're designing some new money." I expect prince Andrew deciding to cost us almost $60M while having to put up with his presence would do it. And don't think the rest of his family doesn't know it.